Improvement in machines for making glue-joints



0. C. BARNES. Machine for Making Glue-Joints.

[10,162,600 PatentedApri|2 7,1875.

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fi 770 zQ/v 5% THE GRAPHIC C0.PHOTO -L TN.39 & 41 PARK PLACE, N.Y.

UNITED STATES PATENT OFFICE ORAMEL G. BARNES, OF OHAMPAIGN, ILLINOIS.

IMPROVEMENT IN MACHINES FOR MAKING GLUE-JCINTS.

Specification forming part of Letters Patent No. 162,600, dated April27, 1875; application filed March 22, 1875.

To all whom it may concern Be it known that I, O. O. BARNES, ofChampaign,in the county ofUhampaign and State of Illinois, have inventedcertain new and useful Improvements in Machine for Making Glue- Joints;and I do hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,and to the letters of reference marked thereon, which form part of thisspecification.

The nature of my invention consists in the construction and arrangementof a sliding form, an adjustable guide, and two adjustable clamps orspring-blocks, the guide being made perfectly straight, and fastened tothe top of a molding or other suitable machine by means of twohand-screws or otherwise, as will be hereinafter more fully set forth.

In the accompanying drawing, Figure 1 is a plan view of my invention.Fig. 2 is a central vertical section on line 00 .00, Fig. 1 and Fig.3isan enlarged View of one ofthe blocks B.

The sliding form A is constructed of substantial material, (of hardlumber,) and of three thicknesses, so put together as to form aT-shapedgroove, a, running the entire length of the iorm, and near theface or straight edge ofthe same. This groove is adapted to receive twoT-shaped clamps orspring'blocks, B B, and allow them to slide toward thecenter of the form, so as to hold any desired length of stock. Theclamp, of which the spring 0 is a part, is fastened to the block bymeans of a bolt, D, passing up through the block, the head beingcountersunk in the under side. The

outer end of the spring 0 is fastened to a bevel-block, b, on theclamp-block B, which gives it an inclined or open position to receivethe stock, and the clamp is operated by means of a tail-nut, E, workingon the bolt D.

By means of the two blocks and clamps I am enabled to hold the boardfirmly to the form.

The adjustable guide G is made of one thickness oflumber, of any desiredlength, and made perfectly straight on one edge, with a circular hole,(I, cut out of the edge, to allow the cutter-head H to pass up throughit. Narrow strips 0 c are fastened longitudinally on the under side ofthe guide G, to raise the same from the table, so that no dust need getbetween the sliding form A and guide G while in use.

The operation of my invention is as follows: After the guide is placedin position the board that is to be straightened is fastened to thesliding form A by means of the clamps, one of said clamps being fastenedto the form by means of a pin, h. The edge of the sliding form is thuspressed against the guide, and the form moved steadily past therapidly-turning cutter-head, which cuts away that portion of the boardthat projects over the edge of the form in a perfectly straight and evenmanner, making what is called a perfect gluejoint.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

The combination of the sliding form A, provided with T-shaped groove (1,clamps B U I) E, and the guide G, all constructed substantially as andfor the purposes herein set forth.

I11 testimony that I claim the foregoing as my own I affix, my signaturein presence of two witnesses.

ORAMEL G. BARNES.

Witnesses .Gr. W. HARWOOD, P. '1. PLATT.

